Oscillating engine.



J. F. LINDBERG & J. -PIIZGBBALD. OSCILLATING ENGINE.

APPLIUATIDN FILED FEB.26,1908.

905,721 Patented Dec. 1, 1908.

( nventor;

' coeds, the invention consists in cc:

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Jill-IN l LlXl BEllt: AND JAMES PlTS'lGiCRALD, (ii lllllBlNU, MlNNESOli-k.

053G ILIA'IING ENGINE To all "when: it may cdncmn:

Be it known that we, Jonn F, lflNllBi'lltt'l and JAMES FITZGERALD, citizens of the United States, residing at l'llibbing in the county of St. Louis and State of Minnesota, have invented certain new and useful improvements in (:soillating Engines. of which the following is a specification.

This invention coniprchonds certain new and useful improvements in the art of steam engincerin; and the invention has or its primary object an ilnnri'ived nonstrnction of engine cylinder oi the oscillating tv m in which embodied a valve chest with a slide valve mounted therein, the parts being so arranged that a recivrorating motion will he imparted to the Sold! valve to nioperly admit steam to the cylinder as the same oscillates.

W'ith those and other objects in view as will more fully appear as the description promo constructions, arrangicnwnts and eoniliinations of tho parts that we will hereinafter lull describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which:

Figure l is a sectional view oi our improved oscillating engine ovlinder and steals chest; and, Figv J is a side elevation thereof at right angles to Fig. 1.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Referring to the drawings, the numeral 1 designates an oscillating steam engine cylinder, and 2 and. 3 the trunnions on which said cylinder is mounted to oscillate.

'l designates the piston, and 5 the piston rod which extends out tliroun'h the stulling box ii in one head of the cylinder.

The valve chest 7 of our invention isincor oratcd with the cylinder 1 and provided witi a side-opening cover so that the slide valve and its concomitant parts may he inserted or removed '.lhe valve chest 7, is interposed between the body of the cylinder and the: trunnion 3, as clearly illustrated in the drawing, and said trunnion is hollow as Specification of Letters Patent.

Ap ilication filed February 26, 1908v l l l it has longitudinal by said fork, a roller Patented Dec. 1, 1908.

Serial No. 417,887.

shown to provide the steam inlet port 9 which diverges and opens into the valve chest 7 at the ends of the wall 10. This wall serves as a hearing for the wear plate 11 and as a balance plate for the slide valve 12. Steam from the chamber formed in the valve chest I passes into the cylinder 1. through the o mositely extending inlet passages 13, and t o steam exhausts through the port 14 and its eonnecting port 15 which opens into the hollow trunnion 2.

The valve rod 16 is secured at one end to the slide valve 12 and passes out through a. stuffing box inthe valve chest 7, the outer end of the valve rod being forked in the present instance as indicated at 17. A pin 18 extends through the members of the fork and secures a roller 19 therein, said roller being accommodated in a slot in a quadrant 20, the fork 17 straddling said quadrant. The quadrant 20 is mounted upon a shaft or arms .21 which is supported by any suitable means, not shown, and a handle lever connected to said shaft and is arranged for adiustahle connection with a latch plate 23, as b a clamp or set screw,

From the foregoing description in connection with the accom anyine; drawings, it will be evident that as t e cylinder oscillates on its trunnions 2 and 3, the slide valve 12 will have imparted to it a reciprocating motion, through the instrumentality of the valve rod 16 and its cam-like engagement with. the quadrant 2th By having the quadrant 20 adjustable on the axis "2], the handle 22 mav be moved so as to swing the quadrant and incline it. in an opposite direction from that shown in the drawing whereby to reverse the engine.

Having thus des'eribed the invention, what is claimed as new is: i i

The combination with an oscillating onnine cylinder and a steam chest secure thereto and provided at one end with a stulfl ing box, of a balanced slide valve mounted in said ehcst, a rigid valve rod connected rigidly to said valve at one end and passing outwardly through the stulling box in which movement, the valve red being formed at its outer end with a fork, a quadrant provided with a slot and straddled journaled in said fork and received in the slot of said quadrant, & In testimuny whereof we afiix our signasimft u un \a hich said quadrant is nwuntqd, fur-es; in prnsvnee of two witnesses. iii $5fftififiiii$553 2?* :1: 553mg :3: O LINDBW 3 I JAMES FITZGERALD. FL. 8.}

E: 5214011 01' the quaz'irant, a handle rigidly cunxmutea! a? my" mi in said shaft, and a. siuttvd \mnwes;

latch mm x 1 which the other end 0f said A. P. SILLIMAN 1 k f E J 11813611518 mimic-dad. I. \S. bILLIMAN. 

